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On the Effectiveness of IP Reputation for Spam Filtering

Summary: On the Effectiveness of IP Reputation for
Spam Filtering
Holly Esquivel and Aditya Akella
University of Wisconsin-Madison
Email: esquivel@cs.wisc.edu, akella@cs.wisc.edu
Tatsuya Mori
NTT Service Integration Laboratories
Email: mori.tatsuya@lab.ntt.co.jp
Abstract--Modern SMTP servers apply a variety of mecha-
nisms to stem the volume of spam delivered to users. These
techniques can be broadly classified into two categories: pre-
acceptance approaches, which apply prior to a message being
accepted (e.g. IP reputation), and post-acceptance techniques
which apply after a message has been accepted (e.g. content based
signatures). We argue that the effectiveness of these measures
varies based on the SMTP sender type. This paper focuses
on the most light-weight pre-acceptance filtering mechanism
IP reputation. We first classify SMTP senders into three main
categories: legitimate servers, end-hosts, and spam gangs, and em-
pirically study the limits of effectiveness regarding IP reputation


Source: Akella, Aditya - Department of Computer Sciences, University of Wisconsin at Madison


Collections: Computer Technologies and Information Sciences